ASTM E2658-15
Standard Practices for Verification of Speed for Material Testing Machines

Standard No.

ASTM E2658-15

Release Date

2015

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E2658-15(2023)

Latest

ASTM E2658-15(2023)

Scope

4.1 Material testing requires repeatable and predictable testing machine speed. The speed measuring devices integral to the testing machines may be used for measurement of crosshead speed over a defined range of operation. The accuracy of the speed value shall be traceable to a National or International Standards Laboratory. Practices E2658 provides procedures to verify testing machines, in order that the indicated speed values may be traceable. A key element to having traceability is that the devices used in the verification produce known speed characteristics, and have been calibrated in accordance with adequate calibration standards.

4.2 Verification of testing machine speed at a minimum consists of either or both of the following options:

4.2.1  Verifying the capability of the testing machine to move the crosshead at the speed selected.

4.2.2 Verifying the capability of the testing machine to adequately indicate the speed of the crosshead.

4.3 Where applicable, determine the testing machine's ramp-to-speed condition. This condition can be significant especially when verifying fast speeds or testing conditions with very short testing durations.

4.4 This procedure will establish the relationship between the actual crosshead speed and the testing machine indicated speed and or selected setting. It is this relationship that will allow confidence in the reported displacement over time data acquired by the testing machine during use.

Note 1: Many material tests never reach the desired test speed. Unless the actual data from the material test is examined, it is often impossible to know if the test speed has been reached or is repeatable from test to test.

1.1 These practices cover procedures and requirements for the calibration and verification of testing machine speed by means of standard calibration devices. This practice is not intended to be complete purchase specifications for testing machines.

1.2 These practices apply to the verification of the speed application and measuring systems associated with the testing machine, such as a scale, dial, marked or unmarked recorder chart, digital display, setting, etc. In all cases the buyer/owner/user must designate the speed-measuring system(s) to be verified.

1.3 These practices give guidance, recommendations, and examples, specific to electro-mechanical testing machines. The practice may also be used to verify actuator speed for hydraulic testing machines.

1.4 This standard cannot be used to verify cycle counting or frequency related to cyclic fatigue testing applications.

1.5 Since conversion fact......

ASTM E2658-15 Referenced Document

• ASTM E2309 Standard Practices for Verification of Displacement Measuring Systems and Devices Used in Material Testing Machines

ASTM E2658-15 history

• 2023 ASTM E2658-15(2023) Standard Practices for Verification of Speed for Material Testing Machines
• 2015 ASTM E2658-15 Standard Practices for Verification of Speed for Material Testing Machines
• 2011 ASTM E2658-11 Standard Practices for Verification of Speed for Material Testing Machines